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Face or flee? Fenitrothion resistance and behavioral response in populations of the maize weevil, Sitophilus zeamais

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dc.contributor.author Braga, Lucas S.
dc.contributor.author Correa, Alberto Soares
dc.contributor.author Pereira, E. J. G.
dc.contributor.author Guedes, Raul Narciso
dc.date.accessioned 2018-10-16T12:21:30Z
dc.date.available 2018-10-16T12:21:30Z
dc.date.issued 2011-02-26
dc.identifier.issn 0022-474X
dc.identifier.uri https://doi.org/10.1016/j.jspr.2010.11.001
dc.identifier.uri http://www.locus.ufv.br/handle/123456789/22287
dc.description.abstract Insect survival in the presence of contact insecticides may be through physiological mechanisms or avoidance of contact with the compound. Curiously, although the first alternative is the object of frequent attention, the second is often neglected, but both may lead to insecticide resistance. Preliminary evidence for both physiological and behavioral resistance to pyrethroids has been obtained for a few strains of the maize weevil Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae). Here we carried out a more comprehensive survey using 15 populations of S. zeamais, by examining a long-used but relatively little studied organophosphate – fenitrothion, recording not only physiological resistance, but also the behavioral responses to exposure. Physiological resistance to fenitrothion among populations of S. zeamais reached low to moderate levels (ranging from 0.9 to 14.1× at the LC50), an increase in resistance levels compared with previous studies. Fenitrothion-induced behavioral avoidance varied among populations, particularly regarding insecticide irritability (i.e., avoidance after contact with fenitrothion), but the behavioral responses observed were mainly stimulus-independent. However, there was no correlation between physiological and behavioral resistance to fenitrothion in S. zeamais populations. Both survival strategies to fenitrothion – facing or fleeing the insecticide exposure, were observed and may co-occur in a single population, emphasizing the need of assessing both responses and their relative importance in designing management programs against stored-product insects. en
dc.format pdf pt-BR
dc.language.iso eng pt-BR
dc.publisher Face or flee? Fenitrothion resistance and behavioral response in populations of the maize weevil, Sitophilus zeamais pt-BR
dc.relation.ispartofseries Volume 47, Issue 3, Pages 161-167, July 2011 pt-BR
dc.rights Elsevier B. V. pt-BR
dc.subject Behavioral avoidance pt-BR
dc.subject Behavioral resistance pt-BR
dc.subject Brazil pt-BR
dc.subject Insecticide resistance pt-BR
dc.subject Organophosphate pt-BR
dc.title Face or flee? Fenitrothion resistance and behavioral response in populations of the maize weevil, Sitophilus zeamais en
dc.type Artigo pt-BR


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  • Artigos [542]
    Artigos Técnico-científicos na área de Biologia Animal

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